Thank you for all the votes and feedback. We have started work on this and the capability will be supported soon. If you would like to get in touch with us to discuss your scenarios, please fill this form: https://aka.ms/ApplicationGatewayCohortNaveen Kanukuntla supported this idea ·Naveen Kanukuntla commented
I have SharePoint Web front Ends that host apps and they need a wildcard domain to route app traffic. To be able to use Application Gateway for my SharePoint Farm I need to be able to route wildcarded subdomain to a specific set of IPs and due to this I am not able to host my SharePoint Farm in Azure.